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uboot-mt623x/cpu/mpc83xx/pci.c

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/*
* Copyright 2004 Freescale Semiconductor.
* Copyright (C) 2003 Motorola Inc.
* Xianghua Xiao (x.xiao@motorola.com)
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Change log:
*
* 20050101: Eran Liberty (liberty@freescale.com)
* Initial file creating (porting from 85XX & 8260)
*/
/*
* PCI Configuration space access support for MPC85xx PCI Bridge
*/
#include <asm/mmu.h>
#include <asm/io.h>
#include <common.h>
#include <pci.h>
#ifdef CONFIG_MPC8349ADS
#include <asm/i2c.h>
#endif
#if defined(CONFIG_PCI)
void
pci_mpc83xx_init(volatile struct pci_controller *hose)
{
volatile immap_t * immr;
volatile clk8349_t * clk;
volatile law8349_t * pci_law;
volatile pot8349_t * pci_pot;
volatile pcictrl8349_t * pci_ctrl;
volatile pciconf8349_t * pci_conf;
u8 val8,tmp8,ret;
u16 reg16,tmp16;
u32 val32,tmp32;
immr = (immap_t *)CFG_IMMRBAR;
clk = (clk8349_t *)&immr->clk;
pci_law = immr->sysconf.pcilaw;
pci_pot = immr->ios.pot;
pci_ctrl = immr->pci_ctrl;
pci_conf = immr->pci_conf;
/*
* Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
*/
val32 = clk->occr;
udelay(2000);
clk->occr = 0xff000000;
udelay(2000);
/*
* Configure PCI Local Access Windows
*/
pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;
/*
* Configure PCI Outbound Translation Windows
*/
pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
pci_pot[0].pocmr = POCMR_EN | (POCMR_CM_512M & POCMR_CM_MASK);
/* mapped to PCI1 IO space 0x0 to local 0xe2000000 */
pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
pci_pot[1].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_16M & POCMR_CM_MASK);
//#if defined(CONFIG_PCI_2)
pci_pot[3].potar = (CFG_PCI2_MEM_BASE >> 12) & POTAR_TA_MASK;
pci_pot[3].pobar = (CFG_PCI2_MEM_PHYS >> 12) & POBAR_BA_MASK;
pci_pot[3].pocmr = POCMR_EN | POCMR_DST | (POCMR_CM_512M & POCMR_CM_MASK);
/* mapped to PCI2 IO space 0x0 to local 0xe3000000 */
pci_pot[4].potar = (CFG_PCI2_IO_BASE >> 12) & POTAR_TA_MASK;
pci_pot[4].pobar = (CFG_PCI2_IO_PHYS >> 12) & POBAR_BA_MASK;
pci_pot[4].pocmr = POCMR_EN | POCMR_DST | POCMR_IO | (POCMR_CM_16M & POCMR_CM_MASK);
//#endif
/*
* Configure PCI Inbound Translation Windows
*/
pci_ctrl[0].pitar1 = 0x0;
pci_ctrl[0].pibar1 = 0x0;
pci_ctrl[0].piebar1 = 0x0;
pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | PIWAR_IWS_2G;
pci_ctrl[1].pitar1 = 0x0;
pci_ctrl[1].pibar1 = 0x0;
pci_ctrl[1].piebar1 = 0x0;
pci_ctrl[1].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | PIWAR_IWS_2G;
/*
* Assign PIB PMC slot to desired PCI bus
*/
#ifdef CONFIG_MPC8349ADS
mpc8349_i2c = (i2c_t*)(CFG_IMMRBAR + CFG_I2C2_OFFSET);
i2c_init(CFG_I2C_SPEED,CFG_I2C_SLAVE);
#endif
val8 = 0;
ret = i2c_write(0x23,0x6,1,&val8,1);
ret = i2c_write(0x23,0x7,1,&val8,1);
val8 = 0xff;
ret = i2c_write(0x23,0x2,1,&val8,1);
ret = i2c_write(0x23,0x3,1,&val8,1);
val8 = 0;
ret = i2c_write(0x26,0x6,1,&val8,1);
val8 = 0x34;
ret = i2c_write(0x26,0x7,1,&val8,1);
#if defined(PCI_64BIT)
val8 = 0xf4; // PMC2<->PCI1 64bit
#elif defined(PCI_ALL_PCI1)
val8 = 0xf3; // PMC1<->PCI1,PMC2<->PCI1,PMC3<->PCI1 32bit
#elif defined(PCI_ONE_PCI1)
val8 = 0xf9; // PMC1<->PCI1,PMC2<->PCI2,PMC3<->PCI2 32bit
#elif defined(PCI_TWO_PCI1)
val8 = 0xf5; // PMC1<->PCI1,PMC2<->PCI1,PMC3<->PCI2 32bit
#else
val8 = 0xf5;
#endif
ret = i2c_write(0x26,0x2,1,&val8,1);
val8 = 0xff;
ret = i2c_write(0x26,0x3,1,&val8,1);
val8 = 0;
ret = i2c_write(0x27,0x6,1,&val8,1);
ret = i2c_write(0x27,0x7,1,&val8,1);
val8 = 0xff;
ret = i2c_write(0x27,0x2,1,&val8,1);
val8 = 0xef;
ret = i2c_write(0x27,0x3,1,&val8,1);
asm("eieio");
/*
* Release PCI RST Output signal
*/
udelay(2000);
pci_ctrl[0].gcr = 1;
#ifndef PCI_64BIT
pci_ctrl[1].gcr = 1;
#endif
udelay(2000);
hose[0].first_busno = 0;
hose[0].last_busno = 0xff;
pci_set_region(hose[0].regions + 0,
CFG_PCI1_MEM_BASE,
CFG_PCI1_MEM_PHYS,
CFG_PCI1_MEM_SIZE,
PCI_REGION_MEM);
pci_set_region(hose[0].regions + 1,
CFG_PCI1_IO_BASE,
CFG_PCI1_IO_PHYS,
CFG_PCI1_IO_SIZE,
PCI_REGION_IO);
hose[0].region_count = 2;
pci_setup_indirect(&hose[0],
(CFG_IMMRBAR+0x8300),
(CFG_IMMRBAR+0x8304));
#define PCI_CLASS_BRIDGE 0x06
reg16 = 0xff;
tmp32 = 0xffff;
pci_hose_write_config_byte(&hose[0],PCI_BDF(0,0,0),PCI_CLASS_CODE,PCI_CLASS_BRIDGE);
pci_hose_read_config_word (&hose[0],PCI_BDF(0,0,0),PCI_COMMAND, &reg16);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_hose_write_config_word(&hose[0],PCI_BDF(0,0,0), PCI_COMMAND, reg16);
/*
* Clear non-reserved bits in status register.
*/
pci_hose_write_config_word(&hose[0],PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
pci_hose_write_config_byte(&hose[0],PCI_BDF(0,0,0), PCI_LATENCY_TIMER,0x80);
#ifndef PCI_64BIT
hose[1].first_busno = 0;
hose[1].last_busno = 0xff;
pci_set_region(hose[1].regions + 0,
CFG_PCI2_MEM_BASE,
CFG_PCI2_MEM_PHYS,
CFG_PCI2_MEM_SIZE,
PCI_REGION_MEM);
pci_set_region(hose[1].regions + 1,
CFG_PCI2_IO_BASE,
CFG_PCI2_IO_PHYS,
CFG_PCI2_IO_SIZE,
PCI_REGION_IO);
hose[1].region_count = 2;
pci_setup_indirect(&hose[1],
(CFG_IMMRBAR+0x8380),
(CFG_IMMRBAR+0x8384));
pci_hose_write_config_byte(&hose[1],PCI_BDF(0,0,0),PCI_CLASS_CODE,PCI_CLASS_BRIDGE);
pci_hose_read_config_word (&hose[1],PCI_BDF(0,0,0), PCI_COMMAND, &reg16);
reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
pci_hose_write_config_word(&hose[1],PCI_BDF(0,0,0), PCI_COMMAND, reg16);
/*
* Clear non-reserved bits in status register.
*/
pci_hose_write_config_word(&hose[1],PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
pci_hose_write_config_byte(&hose[1],PCI_BDF(0,0,0), PCI_LATENCY_TIMER,0x80);
#endif
#if defined(PCI_64BIT)
printf("PCI1 64bit on PMC2\n");
#elif defined(PCI_ALL_PCI1)
printf("PCI1 32bit on PMC1 & PMC2 & PMC3\n");
#elif defined(PCI_ONE_PCI1)
printf("PCI1 32bit on PMC1,PCI2 32bit on PMC2 & PMC3\n");
#else
printf("PCI1 32bit on PMC1 & PMC2 & PMC3 in default\n");
#endif
#if 1
/*
* Hose scan.
*/
pci_register_hose(hose);
hose->last_busno = pci_hose_scan(hose);
#endif
}
#endif /* CONFIG_PCI */
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